BCHT vs XRTX: Correlation
How closely do Birchtech Corp. (BCHT) and XORTX Therapeutics Inc. (XRTX) trade together? Their weekly returns over three years give a correlation of -0.21, which is negative.
Data as of 2026-08-27 · refreshed every trading day · weekly returns · methodology
How correlated are BCHT and XRTX?
On 3 years of weekly data the BCHT/XRTX correlation comes out at -0.21, negative, meaning they tend to move in opposite directions. The link has tightened recently: the 1-year correlation (0.00) runs above the 3-year figure (-0.21). The 5-year figure is -0.12, and annualized covariance runs at -2175.9 %².
Among the 12 assets we track against BCHT, XRTX sits near the bottom by co-movement, at rank #10. Their recent paths diverged sharply: over the last 12 months XRTX outperformed by 16.5 percentage points (-54.9% for BCHT against -38.4% for XRTX). Note the risk asymmetry: XRTX runs 1.6 times the annualized volatility of the other leg, so equal-weighting the two is not an equal-risk position.
How is this computed?
Pearson correlation on weekly returns: ρ(A,B) = cov(rA, rB) / (σA · σB), over windows of 52, 156 and 260 weeks. Covariance is annualized (×52) and expressed in %². Full definitions on the methodology page.
BCHT vs XRTX: side by side
| BCHT (Birchtech Corp.) | XRTX (XORTX Therapeutics Inc.) | |
|---|---|---|
| 1-year return | -54.9% | -38.4% |
| 5-year return | -67.4% | -99.9% |
| Volatility (ann.) | 80.4% | 129.2% |
| Beta vs S&P 500 | 0.41 | 0.23 |
| Max drawdown (3Y) | -80.2% | -99.4% |
| Market cap | – | – |
| P/E (trailing) | – | – |
| Dividend yield | 0.00% | 0.00% |
| Sector / category | US Listed | US Listed |
Year-by-year returns
| Year | BCHT | XRTX |
|---|---|---|
| 2022 | -55.9% | -60.6% |
| 2023 | +253.8% | -96.5% |
| 2024 | -44.6% | -51.1% |
| 2025 | +47.1% | -50.3% |
| 2026 | -66.9% | -13.2% |
Calendar-year price returns; the current year is year-to-date as of the data date above.
Are BCHT and XRTX good diversifiers for each other?
Yes: at -0.21, the two have gone their own ways historically, which is what genuine diversification looks like.
FAQ
What is the correlation between BCHT and XRTX?
As of 2026-08-27, the correlation of weekly returns between BCHT and XRTX is -0.21 over 3 years, 0.00 over 1 year and -0.12 over 5 years.
Is XRTX a good diversifier for BCHT?
Yes: at -0.21, the two have gone their own ways historically, which is what genuine diversification looks like.
What does a correlation of -0.21 mean?
A reading of -0.21 sits on a scale from −1 (opposite moves) through 0 (unrelated) to +1 (identical moves). Correlation captures direction, not magnitude or performance.
Use this data
$ curl https://www.pairbook.io/api/v1/pairs/bcht-vs-xrtx.json
Drop this badge in a README or notebook; it updates with the data:
[](https://www.pairbook.io/pair/bcht-vs-xrtx/)
No key needed, free to use. Full endpoint list in the API documentation.
Related comparisons
Hubs: BCHT correlations · XRTX correlations
